[roughbeast]

Thank you for providing evidence.

Did your IP address change with the upgrade? I ask this because if they haven't given you a new IP, that, in my view, would indicate that they are trialling you without a dedicated connection. That in itself would be encouraging because it would suggest that VM are confident about providing the service on the network as it is. I was on a proof of concept trial some years years ago, (400/25) but was given a dedicated connection and different kit.